Papers by Neelesh Arora
IEEE paper ID 201902027, 2019
This paper discusses the performance of RTV silicone rubber high voltage insulator coatings (HVIC... more This paper discusses the performance of RTV silicone rubber high voltage insulator coatings (HVIC) based on the type of filler used. The present-day emphasis on evaluating coating performance is based on their ability to withstand dry band arcing heat in the IEC 60587 inclined plane tracking and erosion (IPT). This has led to RTV coatings having either alumina trihydrate (ATH) or quartz filler. At high filler loadings, both types of fillers show similar performance in the IPT. However, a significant difference in performance is observed in salt-fog tests which can be attributed to the type of filler in the coating formulation. This paper discusses these results to emphasize that hydrophobicity retention is the key performance indicator of RTV HVIC and that quartz as a filler is preferred over ATH
A negligible percentage of the cost of a Power Transmission network goes towards the cost of insu... more A negligible percentage of the cost of a Power Transmission network goes towards the cost of insulators, yet the cumulative O&M costs, outage costs and equipment damage costs due to poor insulator performance can be staggering. Entire transmission grids have collapsed due to a pollution flashover on a single insulator string. The Northern Grid Disturbance in India on 02 JAN 2010 is one such example. This and other grid failures could have been averted had RTV Gen-4 Silicone Insulator Coating been deployed.
This paper looks at Gen-4 RTV Coated Insulators as a reliable option for use in overhead lines near the coast or near other polluted environments, especially considering there are no established protocols for live-line work on Silicone Composite Insulators.
In order to provide electricity to all, The Government of India launched an initiative developmen... more In order to provide electricity to all, The Government of India launched an initiative development of COAL BASED ULTRA MEGA POWER PROJECTS (UMPPs) of at least 4000 MW capacity each. The Tata Power Company Limited was awarded the first UMPP through a special purpose vehicle called “Coastal Gujarat Power Ltd” (CGPL) at Mundra.
Due to the coastal location of the power plant, leakage current. corona and flashovers were observed in the critical 400 kV switchyards. Reliability enhancement measures like insulator washing, condition monitoring, contamination source reduction were tried with limited success. Thereafter, in 2012 CGPL deployed Gen-4 RTV Insulator Coatings on all insulators and porcelain equipment in the 400kV yards. As a direct result, leakage current, corona and insulator maintenance has substantially reduced and flashovers have been completely eliminated.
A negligible percentage of the cost of a Power Generation Plant or Transmission network goes towa... more A negligible percentage of the cost of a Power Generation Plant or Transmission network goes towards the cost of insulators, yet the cumulative O&M costs, outage costs and equipment damage costs due to poor insulator performance can be staggering. Entire transmission grids have been known to collapse due to a pollution flashover on a single insulator. Common practices to try and attain uninterrupted performance of outdoor porcelain and glass insulators include live-line Insulator washing, application of silicone grease, specially designed ‘anti-fog insulators’, contamination source reduction and increased maintenance surveillance. These methods often fail to prevent failures and are at best temporary solutions.
One of the methods adopted to eliminate pollution flashovers is the use of RTV Silicone Insulator Coatings. Widespread field experience suggests this could be one of the most promising methods to eliminate flashovers, even in the harshest environments.
This paper reviews field experiences of gen-4 RTV Silicone HV Insulator Coatings (HVICs) in very heavily polluted environments and how they have had an exceptional success rate in eliminating flashovers, even when all other methods have failed.
Teaching Documents by Neelesh Arora
RTV Insulator Coatings are being recognized as perhaps the most effective methods to eliminate po... more RTV Insulator Coatings are being recognized as perhaps the most effective methods to eliminate pollution flashovers on ceramic insulators of up to 1200kV. Power utilities, heavy industry (captive power), technical consultants and academics are increasingly researching the subject. This presentation on Gen-4 RTV Insulator Coatings was for an IEEE event at Indian Institute of Technology (IIT, Delhi) and explains various key aspects of the coating. Contact [email protected] for more information
Conference Presentations by Neelesh Arora
Paper on RTV High Voltage Insulator Silicone Rubber Coatings as presented at the CIGRE CBIP Confe... more Paper on RTV High Voltage Insulator Silicone Rubber Coatings as presented at the CIGRE CBIP Conference on Insulators in EHV/UHV Transmission Systems in New Delhi on 12 NOV 2018.
The paper covers trends, developments, new studies of RTV HVIC coated equipment in suspension and tension orientation, partially and fully coated insulators, and the performance of quartz and ATH fillers.
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Papers by Neelesh Arora
This paper looks at Gen-4 RTV Coated Insulators as a reliable option for use in overhead lines near the coast or near other polluted environments, especially considering there are no established protocols for live-line work on Silicone Composite Insulators.
Due to the coastal location of the power plant, leakage current. corona and flashovers were observed in the critical 400 kV switchyards. Reliability enhancement measures like insulator washing, condition monitoring, contamination source reduction were tried with limited success. Thereafter, in 2012 CGPL deployed Gen-4 RTV Insulator Coatings on all insulators and porcelain equipment in the 400kV yards. As a direct result, leakage current, corona and insulator maintenance has substantially reduced and flashovers have been completely eliminated.
One of the methods adopted to eliminate pollution flashovers is the use of RTV Silicone Insulator Coatings. Widespread field experience suggests this could be one of the most promising methods to eliminate flashovers, even in the harshest environments.
This paper reviews field experiences of gen-4 RTV Silicone HV Insulator Coatings (HVICs) in very heavily polluted environments and how they have had an exceptional success rate in eliminating flashovers, even when all other methods have failed.
Teaching Documents by Neelesh Arora
Conference Presentations by Neelesh Arora
The paper covers trends, developments, new studies of RTV HVIC coated equipment in suspension and tension orientation, partially and fully coated insulators, and the performance of quartz and ATH fillers.
This paper looks at Gen-4 RTV Coated Insulators as a reliable option for use in overhead lines near the coast or near other polluted environments, especially considering there are no established protocols for live-line work on Silicone Composite Insulators.
Due to the coastal location of the power plant, leakage current. corona and flashovers were observed in the critical 400 kV switchyards. Reliability enhancement measures like insulator washing, condition monitoring, contamination source reduction were tried with limited success. Thereafter, in 2012 CGPL deployed Gen-4 RTV Insulator Coatings on all insulators and porcelain equipment in the 400kV yards. As a direct result, leakage current, corona and insulator maintenance has substantially reduced and flashovers have been completely eliminated.
One of the methods adopted to eliminate pollution flashovers is the use of RTV Silicone Insulator Coatings. Widespread field experience suggests this could be one of the most promising methods to eliminate flashovers, even in the harshest environments.
This paper reviews field experiences of gen-4 RTV Silicone HV Insulator Coatings (HVICs) in very heavily polluted environments and how they have had an exceptional success rate in eliminating flashovers, even when all other methods have failed.
The paper covers trends, developments, new studies of RTV HVIC coated equipment in suspension and tension orientation, partially and fully coated insulators, and the performance of quartz and ATH fillers.